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1、12MatchTask 1:Put these words into three groupsair glass iron metal oil oxygen salt steam steel water1 Gas:steam _ _2 Solid:_ _ _ _ _3 Liquid:_ _airoxygenwaterglassironmetalsaltsteeloil2popotatassiumssiumsodiumsodiumcalciumcalciummagmagnenesiumsiumalualumiminiumniumzinczincironironcoppercopperTask 2
2、:Match names of metals to picturesReading and Reading and VocabularyVocabulary阅读与词汇阅读与词汇阅读与词汇阅读与词汇 2413The stages of a scientific experimentconclusion aim result method目标目标 方法方法 结果结果 结论结论aimmethodresultconclusionIt is a piece of electrical equipment.电力电力/电器设备电器设备Metals 金属金属Heated in oxygenReaction w
3、ith water or steamPotassium 钾钾Burn to form an oxideReacting with cold waterSodium 钠钠Calcium 钙钙Magnesium 镁镁Reacting with steamAluminium 铝铝Zinc 锌锌Iron 铁铁Reacts slowlyPartial reactionCopper 铜铜Partial reactionNo reaction*an oxide=another substance+oxygen Read the passage and choose the best title for it
4、.Passage AThe Different Uses of Metals The Reaction of Metals The Reaction of Metals with Oxygen Read the passage again and answer the following questions:1.Which of the metals in the table reacts the most with oxygen and water?Potassium,sodium and calcium.2.What happens when you heat calcium in oxy
5、gen?It burns to form an oxide.3.Which metals react with steam?Magnesium,aluminium and zinc.4.Does iron have a slow or fast reaction with steam?It has a slow reaction.5.Does copper react with water?No,it doesnt.Complete the passage with proper words according to passage A.Metals are very important,so
6、 when using them we should know how they _ with different substances.Take iron used in _ equipment for example,when _ in oxygen,it will react slowly.When it is put together with water or _,there will be a partial _.reaction reactelectricalheated steamPassage BA Simple Scientific ExperimentA Simple S
7、cientific Experiment1._:_2._:3._:(1)(2)(3)4._:5._:aimaimmethodmethodresultresultconclusionconclusionapparatusapparatus3 clean iron nails;test tubes;test tube holder;cotton wool;oil;Bunsen burnerTask 1:Put the stages in the correct orderTo find out if iron rusts(a)(b)(c)cotton cotton woolwoolnailsnai
8、lswaterwaterwaterwaterwaterwaterThe nails hThe nails havenavent t rusted.rusted.The nails doThe nails donot rust.not rust.The nails The nails rust.rust.Iron doesnt rust Iron doesnt rust in dry air.in dry air.Iron doesnt rust Iron doesnt rust in air-free water.in air-free water.Iron rusts in Iron rus
9、ts in ordinary water.ordinary water.Conclusion1.In the first part of the experiment,the _ is dry,not wet.2.It shows that iron _ when the air is dry.3.In the second part of the experiment,you must _ the water to make sure there is no _ in it.airdoes not rustboilairRead the passage again and complete
10、the sentences.P 464.You add _ to the water because this keeps _ out of it.5.It shows that _ does not rust in water that has no _ in it.some oilairiron air 你知道实验室有哪些规则吗？请点击请点击观赏观赏Complete the passage with proper words according to Passage A and B.It is hard to think of a world without metals.Differen
11、t metals have different uses,for example,iron can be used in _ equipment.But above all we should know whether it will _ under electricalreactdifferent conditions.Otherwise it will keep the equipment from working well.As we all know,if iron is heated in oxygen,it will react slowly but will not form a
12、n _.oxideOn the other hand,if it is put together with water or _,there will be a _ reaction.Next lets do an _ to support the above.First,get a test tube filled with water and put it over the _ to _ for three minutes.steampartialexperimentBunsen burnerboilThen put three or four clean nails in the wat
13、er with some oil added to it and leave the tube for one week.What happens?The iron does not _ in air-free water.Another experiment,if you put the nails in the tube with the air in it for one week,then what happens?Iron rusts in _ water.rustordinary1.Learn the new words by heart.2.Read Passage A and B and try to retell it.Thank you!